package zy.data.food.util;

import java.util.Random;

public class KeyUtil {

    //生成唯一的主键，格式为：时间+随机数

    public static synchronized String genUniqueKey(){

        Random random = new Random();
        Integer number = random.nextInt(900000)+100000;

        return System.currentTimeMillis() + String.valueOf(number);
    }



}
